drm/nouveau/disp/nv50-: add channel interfaces to control error interrupts

This will be required to support Volta, but also allows us to remove code
that's duplicated for each channel type already.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/disp/changf119.c

@@ -47,3 +47,16 @@ gf119_disp_chan_uevent = {
 	.init = gf119_disp_chan_uevent_init,
 	.fini = gf119_disp_chan_uevent_fini,
 };
+
+void
+gf119_disp_chan_intr(struct nv50_disp_chan *chan, bool en)
+{
+	struct nvkm_device *device = chan->disp->base.engine.subdev.device;
+	const u64 mask = 0x00000001 << chan->chid.user;
+	if (!en) {
+		nvkm_mask(device, 0x610090, mask, 0x00000000);
+		nvkm_mask(device, 0x6100a0, mask, 0x00000000);
+	} else {
+		nvkm_mask(device, 0x6100a0, mask, mask);
+	}
+}

drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.c

@@ -162,6 +162,15 @@ nv50_disp_chan_user(struct nv50_disp_chan *chan, u64 *psize)
 	return 0x640000 + (chan->chid.user * 0x1000);
 }
 
+void
+nv50_disp_chan_intr(struct nv50_disp_chan *chan, bool en)
+{
+	struct nvkm_device *device = chan->disp->base.engine.subdev.device;
+	const u64 mask = 0x00010001 << chan->chid.user;
+	const u64 data = en ? 0x00010000 : 0x00000000;
+	nvkm_mask(device, 0x610028, mask, data);
+}
+
 static int
 nv50_disp_chan_rd32(struct nvkm_object *object, u64 addr, u32 *data)
 {
@@ -288,6 +297,7 @@ nv50_disp_chan_fini(struct nvkm_object *object, bool suspend)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);
 	chan->func->fini(chan);
+	chan->func->intr(chan, false);
 	return 0;
 }
 
@@ -295,6 +305,7 @@ static int
 nv50_disp_chan_init(struct nvkm_object *object)
 {
 	struct nv50_disp_chan *chan = nv50_disp_chan(object);
+	chan->func->intr(chan, true);
 	return chan->func->init(chan);
 }
 

drivers/gpu/drm/nouveau/nvkm/engine/disp/channv50.h

@@ -25,6 +25,7 @@ struct nv50_disp_chan {
 struct nv50_disp_chan_func {
 	int (*init)(struct nv50_disp_chan *);
 	void (*fini)(struct nv50_disp_chan *);
+	void (*intr)(struct nv50_disp_chan *, bool en);
 	u64 (*user)(struct nv50_disp_chan *, u64 *size);
 	int (*bind)(struct nv50_disp_chan *, struct nvkm_object *, u32 handle);
 };
@@ -38,12 +39,14 @@ int nv50_disp_dmac_new_(const struct nv50_disp_chan_func *,
 			struct nv50_disp *, int chid, int head, u64 push,
 			const struct nvkm_oclass *, struct nvkm_object **);
 
+void nv50_disp_chan_intr(struct nv50_disp_chan *, bool);
 u64 nv50_disp_chan_user(struct nv50_disp_chan *, u64 *);
 extern const struct nv50_disp_chan_func nv50_disp_pioc_func;
 extern const struct nv50_disp_chan_func nv50_disp_dmac_func;
 int nv50_disp_dmac_bind(struct nv50_disp_chan *, struct nvkm_object *, u32);
 extern const struct nv50_disp_chan_func nv50_disp_core_func;
 
+void gf119_disp_chan_intr(struct nv50_disp_chan *, bool);
 extern const struct nv50_disp_chan_func gf119_disp_pioc_func;
 extern const struct nv50_disp_chan_func gf119_disp_dmac_func;
 void gf119_disp_dmac_fini(struct nv50_disp_chan *);

drivers/gpu/drm/nouveau/nvkm/engine/disp/coregf119.c

@@ -182,10 +182,6 @@ gf119_disp_core_fini(struct nv50_disp_chan *chan)
 		nvkm_error(subdev, "core fini: %08x\n",
 			   nvkm_rd32(device, 0x610490));
 	}
-
-	/* disable error reporting and completion notification */
-	nvkm_mask(device, 0x610090, 0x00000001, 0x00000000);
-	nvkm_mask(device, 0x6100a0, 0x00000001, 0x00000000);
 }
 
 static int
@@ -194,9 +190,6 @@ gf119_disp_core_init(struct nv50_disp_chan *chan)
 	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x6100a0, 0x00000001, 0x00000001);
-
 	/* initialise channel for dma command submission */
 	nvkm_wr32(device, 0x610494, chan->push);
 	nvkm_wr32(device, 0x610498, 0x00010000);
@@ -222,6 +215,7 @@ const struct nv50_disp_chan_func
 gf119_disp_core_func = {
 	.init = gf119_disp_core_init,
 	.fini = gf119_disp_core_fini,
+	.intr = gf119_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = gf119_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/coregp102.c

@@ -31,9 +31,6 @@ gp102_disp_core_init(struct nv50_disp_chan *chan)
 	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x6100a0, 0x00000001, 0x00000001);
-
 	/* initialise channel for dma command submission */
 	nvkm_wr32(device, 0x611494, chan->push);
 	nvkm_wr32(device, 0x611498, 0x00010000);
@@ -59,6 +56,7 @@ static const struct nv50_disp_chan_func
 gp102_disp_core_func = {
 	.init = gp102_disp_core_init,
 	.fini = gf119_disp_core_fini,
+	.intr = gf119_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = gf119_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/corenv50.c

@@ -179,9 +179,6 @@ nv50_disp_core_fini(struct nv50_disp_chan *chan)
 		nvkm_error(subdev, "core fini: %08x\n",
 			   nvkm_rd32(device, 0x610200));
 	}
-
-	/* disable error reporting and completion notifications */
-	nvkm_mask(device, 0x610028, 0x00010001, 0x00000000);
 }
 
 static int
@@ -190,9 +187,6 @@ nv50_disp_core_init(struct nv50_disp_chan *chan)
 	struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
 	struct nvkm_device *device = subdev->device;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x610028, 0x00010000, 0x00010000);
-
 	/* attempt to unstick channel from some unknown state */
 	if ((nvkm_rd32(device, 0x610200) & 0x009f0000) == 0x00020000)
 		nvkm_mask(device, 0x610200, 0x00800000, 0x00800000);
@@ -224,6 +218,7 @@ const struct nv50_disp_chan_func
 nv50_disp_core_func = {
 	.init = nv50_disp_core_init,
 	.fini = nv50_disp_core_fini,
+	.intr = nv50_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = nv50_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.c

@@ -53,10 +53,6 @@ gf119_disp_dmac_fini(struct nv50_disp_chan *chan)
 		nvkm_error(subdev, "ch %d fini: %08x\n", user,
 			   nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
 	}
-
-	/* disable error reporting and completion notification */
-	nvkm_mask(device, 0x610090, 0x00000001 << user, 0x00000000);
-	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000000);
 }
 
 static int
@@ -67,9 +63,6 @@ gf119_disp_dmac_init(struct nv50_disp_chan *chan)
 	int ctrl = chan->chid.ctrl;
 	int user = chan->chid.user;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000001 << user);
-
 	/* initialise channel for dma command submission */
 	nvkm_wr32(device, 0x610494 + (ctrl * 0x0010), chan->push);
 	nvkm_wr32(device, 0x610498 + (ctrl * 0x0010), 0x00010000);
@@ -95,6 +88,7 @@ const struct nv50_disp_chan_func
 gf119_disp_dmac_func = {
 	.init = gf119_disp_dmac_init,
 	.fini = gf119_disp_dmac_fini,
+	.intr = gf119_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = gf119_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgp102.c

@@ -33,9 +33,6 @@ gp102_disp_dmac_init(struct nv50_disp_chan *chan)
 	int ctrl = chan->chid.ctrl;
 	int user = chan->chid.user;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000001 << user);
-
 	/* initialise channel for dma command submission */
 	nvkm_wr32(device, 0x611494 + (ctrl * 0x0010), chan->push);
 	nvkm_wr32(device, 0x611498 + (ctrl * 0x0010), 0x00010000);
@@ -61,6 +58,7 @@ const struct nv50_disp_chan_func
 gp102_disp_dmac_func = {
 	.init = gp102_disp_dmac_init,
 	.fini = gf119_disp_dmac_fini,
+	.intr = gf119_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = gf119_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c

@@ -96,9 +96,6 @@ nv50_disp_dmac_fini(struct nv50_disp_chan *chan)
 		nvkm_error(subdev, "ch %d fini timeout, %08x\n", user,
 			   nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
 	}
-
-	/* disable error reporting and completion notifications */
-	nvkm_mask(device, 0x610028, 0x00010001 << user, 0x00000000 << user);
 }
 
 static int
@@ -109,9 +106,6 @@ nv50_disp_dmac_init(struct nv50_disp_chan *chan)
 	int ctrl = chan->chid.ctrl;
 	int user = chan->chid.user;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x610028, 0x00010000 << user, 0x00010000 << user);
-
 	/* initialise channel for dma command submission */
 	nvkm_wr32(device, 0x610204 + (ctrl * 0x0010), chan->push);
 	nvkm_wr32(device, 0x610208 + (ctrl * 0x0010), 0x00010000);
@@ -137,6 +131,7 @@ const struct nv50_disp_chan_func
 nv50_disp_dmac_func = {
 	.init = nv50_disp_dmac_init,
 	.fini = nv50_disp_dmac_fini,
+	.intr = nv50_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 	.bind = nv50_disp_dmac_bind,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/piocgf119.c

@@ -43,10 +43,6 @@ gf119_disp_pioc_fini(struct nv50_disp_chan *chan)
 		nvkm_error(subdev, "ch %d fini: %08x\n", user,
 			   nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
 	}
-
-	/* disable error reporting and completion notification */
-	nvkm_mask(device, 0x610090, 0x00000001 << user, 0x00000000);
-	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000000);
 }
 
 static int
@@ -58,9 +54,6 @@ gf119_disp_pioc_init(struct nv50_disp_chan *chan)
 	int ctrl = chan->chid.ctrl;
 	int user = chan->chid.user;
 
-	/* enable error reporting */
-	nvkm_mask(device, 0x6100a0, 0x00000001 << user, 0x00000001 << user);
-
 	/* activate channel */
 	nvkm_wr32(device, 0x610490 + (ctrl * 0x10), 0x00000001);
 	if (nvkm_msec(device, 2000,
@@ -80,5 +73,6 @@ const struct nv50_disp_chan_func
 gf119_disp_pioc_func = {
 	.init = gf119_disp_pioc_init,
 	.fini = gf119_disp_pioc_fini,
+	.intr = gf119_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 };

drivers/gpu/drm/nouveau/nvkm/engine/disp/piocnv50.c

@@ -82,5 +82,6 @@ const struct nv50_disp_chan_func
 nv50_disp_pioc_func = {
 	.init = nv50_disp_pioc_init,
 	.fini = nv50_disp_pioc_fini,
+	.intr = nv50_disp_chan_intr,
 	.user = nv50_disp_chan_user,
 };